The will of the American consumer to pay high prices for energy will
never be sapped!
Several possible reasons. Osram is a European company, and in Europe
they use 50 Hz power. It could very well be that they rolled out their
European version of these bulbs first, and the North American version is
still in development.
Also, in order for any electrical product to be sold in the USA, it has
to be UL approved. To be sold in Canada, it has to be CSA approved. It
could be that it just takes time to get that approval. Or, if the folks
at UL wanted some modifications made to the bulbs to set aside possible
safety concerns, it might be taking the manufacturer time to make those
Osram is a well established lighting manufacturer headquartered in
Germany, and it purchased Sylvania in 1993. In North America the Osram
Sylvania merger sells it's products under the Sylvania name. Osram
sells it's products in the rest of the world under it's own name.
'Osram Sylvania - Wikipedia, the free encyclopedia'
I really don't see anything very different about these Osram bulbs than
the LED, CFL and halogen bulbs available from GE and Phillips, but if
Osram is selling them in Europe, you can be reasonably sure that they'll
soon start showing up in North America under the Sylvania brand name.